AI-generated Key Takeaways
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A DayPart represents a time-period within a day of the week used for targeting by a LineItem.
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The DayPart object requires the specification of a day of the week.
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Start and end times for the targeted period are represented by TimeOfDay objects.
 
            DayPart represents a time-period within a day of the week which is
            targeted by a LineItem.
- Namespace
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https://www.google.com/apis/ads/publisher/v202505 
                        Field | 
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                         Day of the week the target applies to. This field is required. Enumerations 
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                         Represents the start time of the targeted period (inclusive).  | 
                  
                        
                           
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                         Represents the end time of the targeted period (exclusive).  |